APA
VASHISHTA D. P. C., SINHA D. A. K. & KUMAR D. A. (2021). PTERIDOPHYTA. : S. CHAND.
Chicago
VASHISHTA DR P C, SINHA DR A K and KUMAR DR ANIL. 2021. PTERIDOPHYTA. : S. CHAND.
Harvard
VASHISHTA D. P. C., SINHA D. A. K. and KUMAR D. A. (2021). PTERIDOPHYTA. : S. CHAND.
MLA
VASHISHTA DR P C, SINHA DR A K and KUMAR DR ANIL. PTERIDOPHYTA. : S. CHAND. 2021.
